【发布时间】：2014-05-28 14:36:44
【问题描述】：
我创建了一个用户可以存储玩家信息的应用程序。我现在正在寻找一个复选框来确认播放器可用。我知道 sqlite 不能存储布尔值，所以想知道是否有人可以帮助我解决这个问题。我添加了复选框，但目前我将其存储为 0 值，没有任何功能。
下面是显示适配器：
public class DisplayAdapter extends BaseAdapter {
private Context mContext;
private ArrayList<String> id;
private ArrayList<String> firstName;
private ArrayList<String> lastName;
private ArrayList<String> Email;
//private ArrayList<String> ConFirm;
public DisplayAdapter(Context c, ArrayList<String> id,ArrayList<String> fname, ArrayList<String> lname, ArrayList<String> email, ArrayList<String> check) {
this.mContext = c;
this.id = id;
this.firstName = fname;
this.lastName = lname;
this.Email = email;
this.ConFirm = check;
}
public int getCount() {
// TODO Auto-generated method stub
return id.size();
}
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
public View getView(int pos, View child, ViewGroup parent) {
Holder mHolder;
LayoutInflater layoutInflater;
if (child == null) {
layoutInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
child = layoutInflater.inflate(R.layout.listcell, null);
mHolder = new Holder();
mHolder.txt_id = (TextView) child.findViewById(R.id.txt_id);
mHolder.txt_fName = (TextView) child.findViewById(R.id.txt_fName);
mHolder.txt_lName = (TextView) child.findViewById(R.id.txt_lName);
mHolder.txt_eMail = (TextView) child.findViewById(R.id.txt_eMail);
mHolder.txt_cOnfirm = (CheckBox) child.findViewById(R.id.txt_cOnfirm);
child.setTag(mHolder);
} else {
mHolder = (Holder) child.getTag();
}
mHolder.txt_id.setText(id.get(pos));
mHolder.txt_fName.setText(firstName.get(pos));
mHolder.txt_lName.setText(lastName.get(pos));
mHolder.txt_eMail.setText(Email.get(pos));
return child;
}
public class Holder {
TextView txt_id;
TextView txt_fName;
TextView txt_lName;
TextView txt_eMail;
CheckBox txt_cOnfirm;
}
}
这是来自主活动的显示调用：
private void displayData() {
dataBase = mHelper.getWritableDatabase();
Cursor mCursor = dataBase.rawQuery("SELECT * FROM "
+ DbHelper.TABLE_NAME, null);
userId.clear();
user_fName.clear();
user_lName.clear();
user_eMail.clear();
user_cOnfirm.clear();
if (mCursor.moveToFirst()) {
do {
userId.add(mCursor.getString(mCursor.getColumnIndex(DbHelper.KEY_ID)));
user_fName.add(mCursor.getString(mCursor.getColumnIndex(DbHelper.KEY_FNAME)));
user_lName.add(mCursor.getString(mCursor.getColumnIndex(DbHelper.KEY_LNAME)));
user_eMail.add(mCursor.getString(mCursor.getColumnIndex(DbHelper.KEY_EMAIL)));
user_cOnfirm.add(mCursor.getString(mCursor.getColumnIndex(DbHelper.KEY_CONFIRM)));
} while (mCursor.moveToNext());
}
DisplayAdapter disadpt = new DisplayAdapter(getActivity(),userId, user_fName, user_lName, user_eMail, user_cOnfirm);
userList.setAdapter(disadpt);
mCursor.close();
}
{
}
最后是 Dbhelper：
public class DbHelper extends SQLiteOpenHelper {
public static String DATABASE_NAME="userdata";
public static final String TABLE_NAME="user";
public static final String KEY_FNAME="fname";
public static final String KEY_LNAME="lname";
public static final String KEY_EMAIL="email";
public static final String KEY_CONFIRM="confirm";
public static final String KEY_ID="id";
public DbHelper(Context context) {
super(context, DATABASE_NAME, null, 1);
}
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_TABLE="CREATE TABLE " +TABLE_NAME+" ("+KEY_ID+" INTEGER PRIMARY KEY, "+KEY_FNAME+" TEXT, "+KEY_LNAME+" TEXT, "+KEY_EMAIL+" TEXT, "+KEY_CONFIRM+" TEXT DEFAULT 0)";
db.execSQL(CREATE_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS "+TABLE_NAME);
onCreate(db);
}
}
如果您想了解更多信息或代码，请告诉我。提前谢谢你。
-----更新------
下面是 FoursFragment.java 类的数据库更新函数：
//add
view.findViewById(R.id.btnAdd).setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent i = new Intent(getActivity(),
AddActivity.class);
i.putExtra("update", false);
startActivity(i);
}
});
//Update
userList.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
Intent i = new Intent(getActivity(),
AddActivity.class);
i.putExtra("Confirm", user_cOnfirm.get(arg2));
i.putExtra("Mail", user_eMail.get(arg2));
i.putExtra("Fname", user_fName.get(arg2));
i.putExtra("Lname", user_lName.get(arg2));
i.putExtra("ID", userId.get(arg2));
i.putExtra("update", true);
startActivity(i);
}
});
//delete
userList.setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
final int arg2, long arg3) {
build = new AlertDialog.Builder(getActivity());
build.setTitle("Delete " + user_fName.get(arg2) + " "
+ user_lName.get(arg2) + " " + user_eMail.get(arg2));
build.setMessage("Do you want to delete ?");
build.setPositiveButton("Yes",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
Toast.makeText(
getActivity(),
user_fName.get(arg2) + " "
+ user_lName.get(arg2)
+ " is deleted.", 3000).show();
dataBase.delete(
DbHelper.TABLE_NAME,
DbHelper.KEY_ID + "="
+ userId.get(arg2), null);
displayData();
dialog.cancel();
}
});
build.setNegativeButton("No",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
dialog.cancel();
}
});
AlertDialog alert = build.create();
alert.show();
return true;
}
});
return view;
}
}}
@Override
public void onResume() {
displayData();
super.onResume();
}
//display
@SuppressLint("UseValueOf")
private void displayData() {
dataBase = mHelper.getWritableDatabase();
Cursor mCursor = dataBase.rawQuery("SELECT * FROM "
+ DbHelper.TABLE_NAME, null);
userId.clear();
user_fName.clear();
user_lName.clear();
user_eMail.clear();
user_cOnfirm.clear();
if (mCursor.moveToFirst()) {
do {
userId.add(mCursor.getString(mCursor.getColumnIndex(DbHelper.KEY_ID)));
user_fName.add(mCursor.getString(mCursor.getColumnIndex(DbHelper.KEY_FNAME)));
user_lName.add(mCursor.getString(mCursor.getColumnIndex(DbHelper.KEY_LNAME)));
user_eMail.add(mCursor.getString(mCursor.getColumnIndex(DbHelper.KEY_EMAIL)));
user_cOnfirm.add(new Boolean((mCursor.getInt(mCursor.getColumnIndex(DbHelper.KEY_CONFIRM)) == 1)));
} while (mCursor.moveToNext());
}
DisplayAdapter disadpt = new DisplayAdapter(getActivity(),userId, user_fName, user_lName, user_eMail, user_cOnfirm);
userList.setAdapter(disadpt);
mCursor.close();
}
{
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标签： android sqlite listview checkbox